it takes 270 votes to win, analysis by the press shows president barack obama with an edge but, there are 83 votes in six states that could go to earth candidate. that is why they are calling those the swing states and that is what makes this race tight. it is in the six states where both candidates are focused this weekend. daniel knottingham shows us why both parties are both predicting a win on tuesday. [music] >> reporter: mitt romney rallied supporters in cleveland, ohio, one of four battleground states the republican nominee is visiting sunday. >> if the president were to be reelected he would -- [booing] >> he would -- it is possible but not likely. [ laughter ] >> reporter: the race could come down to a single swing state. >> hello florida. >> they are hittinga as many as they can before election day. >> i need iowa! >> reporter: president barack obama took time to join president clinton in new hampshire that carries 4 of the votes needed to win. >> we have come too far to turn back now. >> reporter: both the romney and barack obama campaigns are predicting a victory on tuesda